Three years after French citizen Laurent Vallier and his four children were found dead in a car sunk in a pond behind their home in Kampong Speu province, French authorities yesterday said investigations are continuing, and narrowing.

In a statement released by the French Embassy, investigating judge Claudine Enfoux and her team pointed to the next focus of their probe.

“As the murders are now formally recognised, the investigation will now focus on a few individuals whose testimony have highlighted contradictions,” the release said.

French authorities joined the investigation in March 2013, more than a year after the bodies were discovered, and quickly ruled out local authorities’ initial ruling of a murder-suicide.

Lieutenant General Mok Chito, deputy chief of National Police, yesterday confirmed that Cambodian authorities are continuing to work “in collaboration” with the French embassy and judge.

“Our police now are still searching for suspects in this case of Laurent Vallier and his children. Police will re-investigate and re-questioning related suspects again,” he said.